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The Ford 555 backhoe tractor was first manufactured in 1983, but the series was produced up into the '90s, says eHow. Every 555 model in the series has a three-cylinder diesel engine except for the 555D, which has a four-cylinder diesel. The 555 bore and stroke is 4.4" by 4.4", its displacement is 201 cubic inches and its compression ratio is 16.3-to-1.

In terms of hydraulics, the 555 uses 21 gallons of hydraulic fluid when used as a backhoe and has a pressure of 2,150 pounds per square inch. Its valve flow is 27 gallons per minute and the steering flow is 5.9 gallons per minute. The 555's dig depth is 185 inches with a dump angle of 55 degrees. A 14-foot backhoe comes standard on all models of the 555; however, starting with the 555A, a 15-foot backhoe became optional.

The weight of the 555 backhoe is 13,750 pounds. Its front-axle load is 10,000 pounds, and its rear axle load is 12,600 pounds.